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