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