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