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