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