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