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