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