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