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