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