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