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