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