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