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