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