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