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