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