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