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