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