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