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