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