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