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