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