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