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