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