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