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