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