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