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