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