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