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)(17,18,22,25)(19,23,28,32)(20,29,24,21)(26,31,30,27)(1,3,6,12,7,4,8,15)(2,5,10,9,11,16,14,13)(17,19,22,28)(18,23,25,32)(20,30,24,26)(21,31,29,27)(1,4,7,3)(2,9,11,13)(5,10,16,14)(6,15,8,12)(17,20,21,18,22,24,29,25)(19,26,27,23,28,30,31,32)(1,5,6,9,7,16,8,13)(2,3,10,12,11,4,14,15)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.