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