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