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