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