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