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