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