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