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