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