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