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