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