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