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