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