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