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