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