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