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