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