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