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