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