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