How would you feel about a Muslim saying a prayer during a graduation ceremony?

It all depends on the type of graduation. Like if it was for a muslim pre-school graduation in Yemen, then no that would be redundant and weird. If it's for a more informal graduation ceremony, like if someone is graduating from rehab, then that seems fine. Junkies are going to need something to keep themselves busy when they hit the streets again. Its either Islam or back on the horse.