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