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