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