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