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