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