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