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