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