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