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