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