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