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