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