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