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