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