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