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