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