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