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