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)(19,24)(20,22)(21,23) involution — undirected(5,6,7,8)(9,11)(10,13)(12,14)(15,16)(17,19,22,21)(18,23,20,24)(5,6)(7,8)(10,15)(11,12)(17,19,22,21)(18,24,20,23)(1,2)(3,4)(9,12,14,11)(10,13,15,16)(17,20,22,18)(19,24,21,23)(9,13)(10,11)(12,15)(14,16)(17,21,22,19)(18,24,20,23)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.