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