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