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)(18,20)(21,22,26,24)(23,29,31,27)(25,32,33,28)(30,34,36,35)(5,7,10,9)(6,11,8,12)(14,17)(18,20)(22,24)(25,33)(27,29)(30,36)(1,3,4,2)(5,7,10,9)(6,12,8,11)(13,14)(15,18)(16,17)(19,20)(21,23,26,31)(22,27,24,29)(25,30,33,36)(28,34,32,35)(5,8,10,6)(7,11,9,12)(13,15)(14,18)(16,19)(17,20)(21,24,26,22)(23,27,31,29)(25,32,33,28)(30,34,36,35)(5,9,10,7)(6,11,8,12)(21,25)(22,28)(23,30)(24,32)(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.