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)(17,18)(19,22)(20,21)(23,24)(27,31)(29,32)(9,11)(10,12)(13,14)(15,16)(17,19)(18,22)(20,23)(21,24)(25,26,28,30)(27,29,31,32)(10,15)(11,13)(17,19,21,24)(18,23,20,22)(25,27,28,31)(26,29,30,32)(1,2)(3,5)(4,6)(7,8)(9,12,14,16)(10,11,15,13)(17,19)(18,23)(20,22)(21,24)(25,27)(26,29)(28,31)(30,32)(1,3,4,7)(2,5,6,8)(9,13,14,11)(10,16,15,12)(17,20,21,18)(19,22,24,23)(25,26)(27,29)(28,30)(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.