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