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