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