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