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