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