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