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