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