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