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