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