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