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