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