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