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