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