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