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