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