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