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