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