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