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