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