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