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