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