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)(18,23)(19,24)(25,29)(26,31)(2,7)(3,8)(10,12)(13,16)(17,18,22,23)(19,20,24,27)(21,29,30,25)(26,32,31,28)(1,3,6,8)(2,4,7,5)(10,12)(11,15)(19,24)(20,27)(26,31)(28,32)(1,4,6,5)(2,3,7,8)(9,11)(10,13)(12,16)(14,15)(17,19,22,24)(18,20,23,27)(21,26,30,31)(25,28,29,32)(1,2)(3,4)(5,8)(6,7)(9,12,14,10)(11,16,15,13)(17,20)(18,24)(19,23)(21,28)(22,27)(25,31)(26,29)(30,32)(1,5,6,4)(2,8,7,3)(9,13,14,16)(10,15,12,11)(17,21)(18,25)(19,26)(20,28)(22,30)(23,29)(24,31)(27,32)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.