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)(19,22,20,24)(21,26,30,32)(27,29,28,31)(3,4)(6,8)(9,10)(11,16)(12,14)(13,15)(17,19,23,20)(18,24,25,22)(21,28,30,27)(26,29,32,31)(1,3,5,4)(2,6,7,8)(9,11,13,14)(10,12,15,16)(18,25)(19,20)(26,32)(27,28)(3,4)(6,8)(9,12)(10,14)(11,15)(13,16)(17,20,23,19)(18,22,25,24)(21,28,30,27)(26,29,32,31)(1,4,5,3)(2,6,7,8)(9,10)(11,12)(13,15)(14,16)(17,21)(18,26)(19,27)(20,28)(22,29)(23,30)(24,31)(25,32)(1,2)(3,6)(4,8)(5,7)(9,12)(10,14)(11,15)(13,16)(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.