Following a three-week trial at Manchester Crown Court, David Connor, 26, was found guilty of Mr Livesley's murder and sentenced to life imprisonment and ordered to serve a minimum of 17 years.
Another man, Jimmy Price, 22, has also been sentenced to 18 months imprisonment for perverting the course of justice.
During the trial, the court heard how Billy had been in a car park on Bickerhsaw Lane with his girlfriend and a friend on Friday 28 December 2018, when a white Ford Transit Connect van – driven by Price – pulled up.
A man emerged from the van and approached Billy, who instinctively backed away. After spotting Billy’s attempts to flee, Connor got out of the van and fatally struck him in the head with a crowbar.
Connor was then heard exclaiming ‘I’ve killed him, I’ve killed him’ before he fled with Price and the other man in the van.
Around ten minutes after the attack, Price drove the white van away from the immediate area and abandoned it on Belmont Avenue in an attempt to conceal it from detectives.
Police and Paramedics were called to the scene but the following evening Billy died from his injuries.
A Home Office Post Mortem revealed that Billy died from a fatal penetrative head injury.
Billy's family have paid tribute to him, his mum, Sylvia Mitchell, said:
“My son’s life was brutally taken away from me. He was one in a million and had a heart of gold. He would do anything for anyone. His heart was bigger than him.
He was a kind loving and caring person and I am so proud to call him my son.
Thousands came to his funeral and this just shows how well known and loved he was. Rest in peace young man Mum will always love you xx."
Billy's dad, Scott Livesley, said:
"Billy was a fun loving and outgoing young man who loved all his family. Billy was over the moon about becoming a first time Dad. He would light up any room he walked in with his million dollar smile.
Billy was a keen rugby player and loved football. His beloved football team Everton paid tribute to Billy which he would have loved and as a family we are forever grateful.
Billy had a special bond with his siblings and loved his mum and dad unconditionally."
Detective Inspector Wesley Knights, of GMP’s Major Incident Team, said: