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