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