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)(11,15)(12,13)(14,16) involution — undirected(1,3)(2,6)(4,7)(5,8)(11,16)(14,15)(17,18,21,24)(19,20,23,22)(9,11)(10,14)(12,15)(13,16)(17,19)(18,22)(20,24)(21,23) involution — undirected(2,7)(4,6)(11,16)(14,15)(17,20)(18,23)(19,24)(21,22) involution — undirected(1,4,5,6)(2,3,7,8)(9,11)(10,15)(12,14)(13,16)(17,19)(18,20)(21,23)(22,24)(1,3)(2,4)(5,8)(6,7)(9,12,13,10)(11,15,16,14)(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.