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)(13,17)(14,16)(15,18)(19,20)(21,22,26,27,25,30,24,29)(23,31,33,28,32,35,34,36)(2,4)(5,7)(6,10)(8,14)(9,13)(11,17)(12,16)(15,19)(18,20)(22,27)(23,32)(24,26)(28,35)(29,30)(31,36) involution — undirected(6,11)(7,13)(8,15)(16,20)(21,23)(22,28)(24,33)(25,32)(26,34)(27,31)(29,35)(30,36) involution — undirected(5,8,9,15)(6,12,11,18)(7,14,13,19)(10,16,17,20)(23,32)(28,36)(31,35)(33,34)(7,13)(10,17)(14,19)(16,20)(21,24,25,26)(22,27,30,29)(23,33,32,34)(28,31,36,35)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.