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