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)(11,14)(12,16)(13,15)(17,18,22,20)(19,23,21,24)(25,26,29,28)(27,30,31,32)(1,3,5,8)(2,6,7,4)(9,11,13,16)(10,14,15,12)(17,19,22,21)(18,23,20,24)(27,31)(30,32)(3,8)(4,6)(9,11)(10,12)(13,16)(14,15)(17,19,22,21)(18,24,20,23)(25,27)(26,30)(28,32)(29,31)(1,4)(2,3)(5,6)(7,8)(9,11)(10,12)(13,16)(14,15)(17,20,22,18)(19,23,21,24)(1,2)(3,4)(5,7)(6,8)(9,12)(10,11)(13,14)(15,16)(17,21,22,19)(18,23,20,24)(25,28,29,26)(27,32,31,30)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.