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