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