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