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