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