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