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