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)(17,18,21,24)(19,27,29,23)(20,25,22,26)(28,31,32,30)(1,2,4,5)(3,6,7,8)(9,11,12,16)(10,13,14,15)(17,19)(18,23)(20,30)(21,29)(22,31)(24,27)(25,32)(26,28)(10,14)(13,15)(17,18)(19,28)(20,26)(21,24)(22,25)(23,31)(27,30)(29,32) involution — undirected(1,3,4,7)(2,6,5,8)(10,14)(13,15)(18,24)(23,27)(25,26)(28,32)(2,5)(6,8)(11,16)(13,15)(17,20)(18,25)(19,29)(21,22)(23,27)(24,26) 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.