One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(3,7)(9,10,13,12)(11,15,16,14)(17,18,24,23)(19,28,22,25)(20,30,29,26)(21,27,31,32)(2,5)(6,8)(9,11,13,16)(10,14,12,15)(17,19,24,22)(18,25,23,28)(20,21,29,31)(26,27,30,32)(1,2)(3,6)(4,5)(7,8)(17,20)(18,26)(19,21)(22,31)(23,30)(24,29)(25,27)(28,32) involution — undirected(1,3)(2,6)(4,7)(5,8)(9,12,13,10)(11,15,16,14)(17,21,24,31)(18,27,23,32)(19,29,22,20)(25,30,28,26)(17,22,24,19)(18,25,23,28)(20,31,29,21)(26,27,30,32)(17,23,24,18)(19,28,22,25)(20,30,29,26)(21,32,31,27)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.