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