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