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