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