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