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