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