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