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