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