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