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