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