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