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