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