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