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