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