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