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