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