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