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