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