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)(21,22,25,27)(23,28,30,26)(24,32,33,29)(31,34,36,35)(1,2)(3,4)(21,23)(22,26)(24,31)(25,30)(27,28)(29,34)(32,35)(33,36) involution — undirected(6,7)(11,13)(12,14)(18,19)(22,27)(23,30)(29,32)(31,36) involution — undirected(5,7,10,6)(8,13,16,11)(9,14,17,12)(15,19,20,18)(21,23)(22,28)(24,31)(25,30)(26,27)(29,35)(32,34)(33,36)(5,8)(6,11)(7,13)(9,15)(10,16)(12,18)(14,19)(17,20)(21,22)(23,28)(24,29)(25,27)(26,30)(31,35)(32,33)(34,36) involution — undirected(5,9,10,17)(6,12,7,14)(8,15,16,20)(11,18,13,19)(21,24,25,33)(22,29,27,32)(23,31,30,36)(26,34,28,35)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.