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