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