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