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