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