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