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)(11,14,16,15)(17,18)(19,21)(20,24)(22,23)(27,31)(29,32)(1,2)(3,7)(4,5)(6,8)(9,10)(11,15)(12,13)(14,16)(17,19,22,24)(18,20,23,21)(2,5)(6,7)(10,12)(14,15)(17,20,22,21)(18,19,23,24)(25,26,28,30)(27,29,31,32)(1,2)(3,6)(4,5)(7,8)(9,11)(10,14)(12,15)(13,16)(17,21,22,20)(18,19,23,24)(25,27)(26,29)(28,31)(30,32)(1,3)(2,6)(4,8)(5,7)(9,12,13,10)(11,15,16,14)(17,19)(18,20)(21,23)(22,24)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.