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