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