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