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