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