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