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