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