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)(17,18,21,24)(19,26,28,23)(20,30,25,22)(27,29,31,32)(1,2,6,10,5,9,4,8)(3,7,15,16,14,12,13,11)(17,19,21,28)(18,23,24,26)(20,27,25,31)(22,29,30,32)(1,2,5,9)(3,12,14,7)(4,8,6,10)(11,13,16,15)(17,20,22,18,21,25,30,24)(19,27,29,23,28,31,32,26)(1,3,6,15,5,14,4,13)(2,7,10,16,9,12,8,11)(18,24)(19,28)(20,25)(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.