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