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