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