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