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