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