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