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