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