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