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