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