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