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