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