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