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