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