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