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