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