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)(19,27)(20,29)(21,28)(22,26)(23,24)(25,31)(30,32)(1,3,5,8)(2,6,7,4)(10,13)(14,16)(17,19,23,28)(18,21,24,27)(20,30,31,22)(25,32,29,26)(2,7)(3,8)(9,10,12,13)(11,14,15,16)(18,24)(21,27)(25,29)(26,32)(3,8)(4,6)(11,15)(14,16)(17,20,23,31)(18,25,24,29)(19,22,28,30)(21,26,27,32)(1,2)(3,4)(5,7)(6,8)(9,10)(11,14)(12,13)(15,16)(17,21)(18,19)(20,26)(22,25)(23,27)(24,28)(29,30)(31,32) involution — undirected(1,4)(2,3)(5,6)(7,8)(9,11)(10,14)(12,15)(13,16)(17,22)(18,26)(19,20)(21,25)(23,30)(24,32)(27,29)(28,31) 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.