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