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