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