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