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