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