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