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