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