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