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)(21,22,27,23,26,28,25,30)(24,29,33,31,34,36,35,32)(5,7)(6,11)(8,15)(9,17)(10,16)(12,19)(13,14)(18,20)(21,23,27,28,26,30,25,22)(24,32,33,29,34,31,35,36)(1,2,3,4)(5,8,10,9)(6,12,13,18)(7,15,16,17)(11,19,14,20)(22,28)(23,30)(29,36)(31,32)(7,16)(11,14)(15,17)(19,20)(21,24)(22,29)(23,31)(25,35)(26,34)(27,33)(28,36)(30,32) involution — undirected(5,9,10,8)(6,12,13,18)(7,17,16,15)(11,19,14,20)(21,25,26,27)(22,30,28,23)(24,33,34,35)(29,31,36,32)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.