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