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