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