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