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