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