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