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