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