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