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