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