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