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