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