One vertex per element, one color per generator, with an edge from x to x·s.
(3,8)(4,6)(17,18)(19,25)(20,26)(21,24)(22,23)(27,30)(28,29)(31,32) involution — undirected(1,2)(3,4)(5,7)(6,8)(9,10,13,16)(11,12,15,14)(18,23)(19,26)(24,32)(27,29)(1,3,5,8)(2,6,7,4)(9,11)(10,14)(12,16)(13,15)(18,23)(19,26)(24,32)(27,29)(2,7)(3,8)(9,12,13,14)(10,15,16,11)(17,19)(18,20)(21,29)(22,26)(23,25)(24,30)(27,31)(28,32)(1,4)(2,3)(5,6)(7,8)(9,11)(10,12)(13,15)(14,16)(17,20)(18,19)(21,30)(22,25)(23,26)(24,29)(27,32)(28,31) involution — undirected(1,2)(3,6)(4,8)(5,7)(9,12)(10,15)(11,16)(13,14)(17,21,22,31)(18,24,23,32)(19,27,26,29)(20,28,25,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.