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