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