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