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