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