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