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