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