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