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