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