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