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