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