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