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