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