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