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