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