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