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