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