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