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