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