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