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