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