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