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