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