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)(19,21)(20,28)(22,25)(23,26)(24,29)(27,30)(31,32)(2,6)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19,21,18,23,25,22,26)(20,27,29,24,30,28,31,32)(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,20,22,31,23,30,21,29)(18,24,19,27,26,32,25,28)(1,4,5,3)(2,8,6,7)(9,11)(10,14)(12,15)(13,16)(17,21,23,22)(18,19,26,25)(20,29,30,31)(24,27,32,28)(11,15)(14,16)(20,30)(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.