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