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