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