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