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