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