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