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