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