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