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