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