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