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