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