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