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