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