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