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