One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,4,8,6)(9,10,13,15)(11,12,16,14)(19,23)(22,24)(1,3)(2,6)(4,7)(5,8)(11,16)(12,14)(18,21)(22,24)(25,26,29,28)(27,31,32,30)(2,7)(3,8)(9,11)(10,14)(12,15)(13,16)(17,18,20,21)(19,22,23,24)(25,27,29,32)(26,30,28,31)(1,4,5,6)(2,8,7,3)(17,19,20,23)(18,22,21,24)(25,28,29,26)(27,31,32,30)(1,2)(3,4)(5,7)(6,8)(9,12,13,14)(10,11,15,16)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.