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