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