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