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