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