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