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