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