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