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