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