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