Graham's 3-pointer was one of seven made by the Little Irish (12-4).
McQuaid's Zack Ayers finished with a game-high 16 points along with 14 rebounds. Miles Power and Charlie Zaepfel each scored 14 points for McQuaid (11-4) in the loss.
Nine different players got on the scoresheet for Aquinas. Kyron Allen scored a team-high 11 points, while George Graham and Patrick McLamore each chipped in 10 points.