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