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