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