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