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