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