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