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