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