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