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