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