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