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