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