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