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