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