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