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