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