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