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