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