One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,18)(8,23)(9,17)(10,16)(11,15)(12,20)(13,21)(14,26)(19,28)(22,29)(24,34)(25,33)(27,32)(30,36)(31,35) involution — undirected(1,2)(3,4)(5,7,11,22,10,21,9,20)(6,12,17,13,16,29,15,18)(8,19,25,24,27,35,26,36)(14,28,32,30,33,31,23,34)(2,4)(5,7)(6,13)(8,24)(9,22)(10,21)(11,20)(12,17)(14,31)(15,29)(16,18)(19,25)(23,34)(26,35)(27,36)(28,33)(30,32) involution — undirected(5,8)(6,14)(7,19)(9,26)(10,27)(11,25)(12,28)(13,30)(15,23)(16,33)(17,32)(18,34)(20,36)(21,35)(22,24)(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.