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