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