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