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