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