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