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