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