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