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