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