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