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