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