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