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