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