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