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