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