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