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