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