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