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