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