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