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