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