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