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