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