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