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