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