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