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