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