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