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