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