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