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