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