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