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