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