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