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