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