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