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