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