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