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