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