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