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