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