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