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