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