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