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