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