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