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