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