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