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