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