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