After retirement, Sawairi started his coaching career at Nagoya Grampus Eight in 1996. He mainly served as scout. From 2000, he coached for university and high school teams until 2008. In May 2008, he signed with JEF United Chiba and he became a coach under new manager Alex Miller. Sawairi managed in 2 matches as caretaker until Miller's registration is completed. However the club performance was bad and he was sacked with Miller in September2009. From 2010, he managed university teams until 2014. In November 2014, he signed with Kataller Toyama and became a general manager. In August 2015, manager Yasuyuki Kishino was sacked and Sawairi became a new manager. He managed the club until end of 2015 season and left the club end of 2016 season.