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