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