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