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