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