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