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