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