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