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