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