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