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