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