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