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