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