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)(11,12,16,14)(17,18,21,24)(19,20,23,22)(26,28)(27,31)(1,2,4,6)(3,5,8,7)(9,11,13,16)(10,14,15,12)(25,26,30,28)(27,32,31,29)(1,3)(2,5)(4,8)(6,7)(9,11)(10,12)(13,16)(14,15)(17,19,21,23)(18,22,24,20)(25,27)(26,29)(28,32)(30,31)(1,3)(2,5)(4,8)(6,7)(9,12)(10,11)(13,14)(15,16)(17,18)(19,22)(20,23)(21,24)(25,28,30,26)(27,32,31,29)(1,2)(3,5)(4,6)(7,8)(9,11)(10,12)(13,16)(14,15)(17,20,21,22)(18,23,24,19)(25,29,30,32)(26,31,28,27)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.