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