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