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