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