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