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