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