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