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