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