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