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