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