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