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