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