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)(11,14,16,15)(17,18)(19,26)(20,22)(21,23)(24,28)(25,29)(27,32)(30,31)(1,3,5,4)(2,6,7,8)(9,11)(10,14)(12,16)(13,15)(18,22)(19,27)(20,29)(23,25)(24,32)(26,31)(1,4,5,3)(2,6,7,8)(10,13)(11,15)(14,16)(18,23)(22,25)(24,31)(26,32)(17,19,21,27)(18,24,23,31)(20,30,29,28)(22,26,25,32)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.