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