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